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501f062e91
This describes the LASI PS2 device interface implemented within QEMU. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Message-Id: <20220624134109.881989-49-mark.cave-ayland@ilande.co.uk> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
/*
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* QEMU LASI PS/2 emulation
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*
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* Copyright (c) 2019 Sven Schnelle
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*
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*/
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/*
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* QEMU interface:
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* + sysbus MMIO region 0: MemoryRegion defining the LASI PS2 keyboard
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* registers
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* + sysbus MMIO region 1: MemoryRegion defining the LASI PS2 mouse
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* registers
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* + sysbus IRQ 0: LASI PS2 output irq
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* + Named GPIO input "ps2-kbd-input-irq": set to 1 if the downstream PS2
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* keyboard device has asserted its irq
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* + Named GPIO input "ps2-mouse-input-irq": set to 1 if the downstream PS2
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* mouse device has asserted its irq
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*/
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#ifndef HW_INPUT_LASIPS2_H
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#define HW_INPUT_LASIPS2_H
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#include "exec/hwaddr.h"
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#include "hw/sysbus.h"
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struct LASIPS2State;
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typedef struct LASIPS2Port {
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struct LASIPS2State *parent;
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MemoryRegion reg;
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void *dev;
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uint8_t id;
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uint8_t control;
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uint8_t buf;
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bool loopback_rbne;
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bool irq;
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} LASIPS2Port;
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struct LASIPS2State {
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SysBusDevice parent_obj;
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hwaddr base;
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LASIPS2Port kbd;
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LASIPS2Port mouse;
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qemu_irq irq;
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};
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#define TYPE_LASIPS2 "lasips2"
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OBJECT_DECLARE_SIMPLE_TYPE(LASIPS2State, LASIPS2)
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LASIPS2State *lasips2_initfn(hwaddr base, qemu_irq irq);
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#endif /* HW_INPUT_LASIPS2_H */
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